12v from 24v Battery Bank ?
With two 12vs in series and the 24v charger on the other two posts, can you draw 12v at the same time as they are being charged at 24v, from the pos and neg of just one of the batts? If so, will th...
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BFL13 wrote:
This would not be a normal procedure, but a way to get by for a while. It would require hands on management.
Obviously not balanced but being in parallel for the night should get them evened up some. I know the high one only charges the low one slowly, but it would depend how far apart they are in AH if they have time to even up.
2 amps recharge evening up for 10 hours would do 20AH so they could be 40AH apart at first for instance?
Sure they could, depending on how much power you drew. Every AH you use from the split battery is an AH of charge that it's not getting. (It's not quite that straightforward in practice because charging the battery isn't perfectly efficient, so the unbalance won't be quite as bad as simply deducting your usage, but the concept is still there.)
If you have the space and so forth, you could have two pairs of batteries, one in series recharging and one in parallel discharging, swapping roles as needed.
Edit: misread/misunderstood the question at first. The rebalancing would not be a linear function; the current varies with the voltage difference, so it will taper off as they get closer to being even.
